Incinerator systems

ABSTRACT

This invention relates to an incinerator system of the class including a lower tank for containing a liquid including apparatus for maintaining the liquid at a predetermined level, apparatus for supplying combustible scum containing material for flotation in a layer on the surface of the liquid; a medial ignition chamber mounted in fluid flow communication with the tank and having a burner device disposed therein; apparatus for supplying combustion air to the ignition chamber; an upper combustion chamber mounted in fluid flow communication with the ignition chamber and having apparatus for supplying combustion air to the combustion chamber; and a scrubber for receiving the products of combustion from the combustion chamber and discharging clean exhaust gas therefrom.

United tates Patent Davy et a1.

[ 1 May 27, 1975 Marquess, Matawan, both of NJ.

3,685,467 8/1972 Morrill 110/8 R Primary Examiner-Kenneth W. Sprague Assistant Examiner-Henry C. Yuen Attorney, Agent, or FirmFitzpatrick, Celia, Harper & Scinto [57] ABSTRACT This invention relates to an incinerator system of the class including a lower tank for containing a liquid including apparatus for maintaining the liquid at a predetermined level, apparatus for supplying combustible scum containing material for flotation in a layer on the surface of the liquid; a medial ignition chamber mounted in fluid flow communication with the tank and having a burner device disposed therein; apparatus for supplying combustion air to the ignition chamber; an upper combustion chamber mounted in fluid flow communication with the ignition chamber and having apparatus for supplying combustion air to the combustion chamber; and a scrubber for receiving the products of combustion from the combustion chamber and discharging clean exhaust gas therefrom.

12 Claims, 2 Drawing Figures [73] Assignee: Nichols Engineering & Research Corporation, New York, NY.

[22] Filed: Oct. 6, 1972 [21] Appl. No.: 295,535

[52] US. Cl. 110/8 R; 110/119 [51] Int. Cl. F23g 5/12 [58] Field of Search 110/8, 9, 7 R, 7 S, 119

[56] References Cited UNITED STATES PATENTS 2,537,467 1/1951 Komline 110/8 R 2,729,301 1/1956 Ekstrom,.1r... 110/119 2,840,144 6/1958 Schmitz 110/7 R 3,034,456 5/1962 Reed 110/8 R 3,358,622 12/1967 Brennan 110/8 R 3,417,717 12/1968 Jacobovici 11017 R 3,447,493 6/1969 Taylor et a1. 110/119 3,525,,309 8/1970 Katz 110/119 3,572,265 3/1971 Stockman 110/18 R 3,608,278 9/1971 Greenspan 110/1l9 INCINERATOR SYSTEMS This invention relates to a new and improved incinerator system. It is particularly adapted, among other possible uses, for use with sewerage treatment equipment.

In view of todays so-called population explosion", the treatment of sewerage has become of the upmost importance. It will be appreciated that sewerage, by its very nature, presents difficult problems in the treatment thereof. It is oleaginous in character, whereby the solid material rises to the surface of the water, and when attempts are made to ignite these floatable combustibles, they are slow to ignite and it is difficult to obtain complete combustion. In view of the incomplete combustion, apparatus employed heretofore tended to discharge into the atmosphere particulate matter which, by todays standards, is intolerable. Related patents in this art include U.S. Pat. No. 3,356,622, issued Dec. 19, 1967; U.S. Pat. No. 2,194,136, issued Mar. 19, 1940; U.S. Pat. No. 2,537,467, issued Jan. 9, 1951; and U.S. Pat. No. 3,034,456, issued May 15, 1962.

While in the past, certain isolated problems have been individually overcome, there has been a lack of appreciation of the overall factors involved. No one has considered all of the elements and put together a composite integrated system. The present invention involves a novel combination of elements combined in such a way as to afford a very efficient and effective solution to the difficulties encountered heretofore, as will become apparent as the description proceeds. Thus, Applicant, by a careful examination of the overall problem, including a complete reevaluation of the approach, has discovered the individual factors involved and their interrelationship. This has made it possible to insure complete combustion of all oleaginous floatabie materials contained in water passing through a sewerage treatment plant in such a manner that the exhaust gases are free of deleterious effects.

In order to accomplish the desired results, this invention provides, in summary, an incinerator system characterized by an incinerator member having a lower tank portion for containing a liquid, means for maintaining the liquid in the lower tank portion at a predetermined level and means for supplying combustible scum containing material to the tank portion for flotation in a layer on the liquid. A medial ignition chamber is mounted on the tank portion in fluid flow communication. This chamber contains burner means as well as means for supplying combustion air thereto. An upper combustion chamber is mounted in fluid flow communication with the ignition chamber, and it also receives a supply of combustion air. Conduit means are employed for transferring the products of combustion from the combustion chamber to a gas scrubber disposed adjacent the combustion chamber for cleaning be obvious herefrom or may be learned by practice with the invention, the same being realized and attained by means of the instrumentalities and combina tions pointed out in the appended claims.

The invention consists of novel parts, constructions, arrangements, combinations, methods and improvements herein shown and described.

The accompanying drawings referred to and constituting a part hereof illustrate embodiments of the invention, and together with the description, serve to explain the principles of the invention.

FIG. 1 is a vertical sectional view showing the incinerator member portion of the incinerator system, constructed in accordance with the concepts of this invention; and

FIG. 2 is a side elevation of the incinerator system, of the invention.

In the embodiment of the invention illustrated, an incinerator system comprises an incinerator member 10 having a lower tank portion 12 mounted on a base plate 13, a medial ignition chamber 14 mounted in fluid flow communication with the tank portion, and an upper combustion chamber 16 mounted in fluid flow communication with the ignition chamber. As seen in FIG. 2, the lower tank 12 has an inlet 18 for receiving a continuous flow of oleaginous floatable materials contained in water from a sewer line, or the like. The tank portion acts as a separator in which the floatable material is permitted to rise to the surface of the water below the ignition chamber. There is a continuous flow of water Within the tank which discharges through an outlet 20 to an overflow conduit 22. This conduit is substantially vertically disposed, and there is sufficient free flow communication with the tank 12 so that by maintaining a preselected water level in the conduit 22, as measured by an indicator 26, the same water level is maintained in the tank 12. It will be appreciated that by this means, accurate water level control can be maintained in the tank 12 in spite of the fact that the surface thereof is normally in a rather turbulent state for combustion purposes, as will be discussed more fully hereinafter. A control valve 28, having a hand lever 30, serves to control the flow of water from the conduit 22 to a drain pipe 32, whereby controlling water level in the conduit 22, as well as in the tank 21. Any suitable control valve may be employed, such as a Nichols level control valve, Model 100, as manufactured by the Nichols Engineering & Research Corporation, which is set by the hand lever 30 at an indicated water level 26 and will automatically discharge the necessary quantity of water into the drain 32 to maintain the so-selected water level. For draining, maintenance, and emergency purposes, a bypass valve 34 is interposed between the bottom of the conduit 22 and the drain 32.

As best seen in FIG. 1, there is a filler member 36 in the bottom of the water tank 12 adjacent the outlet 20, and an access door 38 serves for inspection and maintenance purposes. The liquid, or water, is maintained at a level indicated at 40 adjacent the ignition chamber 14, and the inlet 18 and the outlet 20 are disposed therebelow.

The fioatable material or scrum rises in the tank 12 to the surface 40 of the water where it may constitute a thick layer. This layer could be covered by ash after partial ignition and, thereby, tend to cake so as to prevent complete combustion. This is prevented by agitating the scum by means of fingers 42 mounted on a transverse shaft 44, rotatably mounted on the tank, as at 46, and driven at a very slow rotational speed by means of a drive gear or pulley 48, driven by motor means 49, FIG. 2 provided for the purpose.

It will be appreciated that the floatable combustibles usually constitute only a small proportion of the liquid passing through the separator, and consequently the accumulation of such combustibles at the surface of the liquid is relatively slow, such as from about 12 hours to about 24 hours, for example. When the scum layer has accumulated, it is ignited by means of ignition burners 50, which are angularly directed at an angle of about 45 towards said liquid surface and which burn oil or other suitable fuels. A steel ring 59, FIG. 1, is mounted on gusset plates 61 to extend partly above and partly below the water level 40. In order to support combustion, air is supplied to the system, as by means of air jets 52 mounted around the periphery of the ignition chamber. These jets are supplied by way of an annular header 54 connected to an inlet 56 which, in turn, is connected to a distributing valve 58, FIG. 2, leading from a combustion air fan 60. Secondary combustion air is supplied to the ignition chamber 14, as by means of jets 62, FIG. I, mounted around the periphery of the ignition chamber and supplied by an annular header 64, through an inlet 66, connected to the distributing valve 58, leading from the combustion air fan 60. Preferably, the jets 52 and 62 are directed tangentially, or at an angle with respect to the radius, for creating turbulence in the chamber. Also, preferably, the pressure of the secondary air is substantially lower than that of the primary air and, accordingly, such control is effected by means of manipulating the distributing valve 58, provided for the purpose.

The upper wall 70 of the ignition chamber is of shallow dome configuration and directs the products of combustion to a connecting passage 72 of substantially reduced diameter with respect to the diameter of the ignition chamber 14 and the combustion chamber 16.

As seen in FIG. 1, a baffle 74, fabricated from refractory material, is mounted on the bottom of the combustion chamber 16, encompassing the upper end of the connecting passage 72 to thereby direct the products of combustion to enter the combustion chamber in a generally radial flow pattern. In effect, the baffle forms an annular open-topped passage 76, with a shallow dishshaped lower wall, in the bottom of the combustion chamber. Combustion air jets 78, mounted around the periphery of the combustion chamber, supply combustion air to the passage 76, preferably directed tangentially or at an angle with respect to the radius, to create sufficient turbulence to ensure substantially complete combustion. The jets are supplied by an annular header 80, having an inlet 82 connected to the distributing valve 58, leading from the combustion air fan 60. The distributing valve 58 is so-manipulated that the air flow through the jets 78 is maintained at such a volumn as to maintain a preselected temperature of the order of from about l200 to about l600F. in the combustion chamber 16, to ensure substantially complete combustion of the combustible material.

The combustion chamber 16 is provided with a generally shallow dome-shaped upper wall 84 leading to an outlet 86 or reduced diameter with respect to the diameter of the combustion chamber, for discharging the products of combustion. The water tank portion 12 is preferably fabricated from a circular steel shell 88, FIG. 1, and the ignition chamber 14 and the combustion 16 includes a circular steel shell 90, lined with block insulation 92 which, in turn, is lined with refractory material 94. To facilitate assembly, the ignition chamber 14 and the combustion chamber 16 are fabricated as separate elements and fixedly connected to each other, as at 96. These chambers are provided with access doors 98 and 100, respectively, for maintaining, observation and the like purposes.

As best seen in FIg. 2, a discharge adaptor 102 is mounted on the outlet 86. This adaptor is connected to a elbow 104, which is provided with a butterfly valve 106 to control the flow of combustion gases therethrough. The elbow directs the gases downwardly into a quencher 108, which cools and increases the velocity of the moving gases. Any suitable type of quencher may be employed such as the water spray injection type described in US. Pat. application Ser. No.

850,265, filed Aug. 14, 1970, for example. A transfer conduit 110 interconnects the quencher with an induced draft fan 112, that accelerates the flow of the cooled products of combustion into an entrance duct 114 at the foot of a cylindrical gas scrubber 116, which is of any suitable construction, such as that described in the aforementioned US. Pat. application Ser. No. 850,265, for example. The gas scrubber has a lower outlet 118 for the discharge of particulate matter and an upper exhaust stack 120 for the discharge of pollution free exhaust gases.

For bypass purposes, a bypass stack 112 is connected to the discharge adaptor 102, and a butterfly valve 124 is mounted therein for purposes of opening the bypass stack, if desired.

It will thus be seen that Applicant has discovered and utilized the important factors controlling the combustion of scum and the manner in which these factors are interrelated one to the other, and have provided an improved incinerator system which is efflcient and effective as compared to apparatus employed heretofore.

Although particular embodiments of the invention are herein disclosed for purposes of explanation, various modifications thereof, after study of this specification, will be apparent to those skilled in the art to which the invention pertains.

What is claimed and desired to be secured by Letters Patent is:

1. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber, a conduit interconnecting said ignition chamber and said upper combustion chamber, said conduit having a substantially smaller cross-sectional area than said chambers, said upper combustion chamber having substantially the same diameter as said medial ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, means for raising the floatable material to the surface of the liquid, means for agitating the surface of the liquid, said tank portion having an oulet, means for maintaining the agitated surface of the liquid at a predetermined level in said tank, ignition burners mounted on the wall of said ignition chamber, means'for supplying air to support combustion in said ignition chamber, means for changing the direction of flow of the products of combustion upon entering the upper combustion chamber, means for supplying air to said combustion chamber. adjacent said means for changing the direction of flow to support combustion therein, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said means for connecting said combustion chamber outlet to said gas scrubber including means for increasing the flow velocity of said products of combustion, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases.

2. An incinerator system comprising, in combination, an incinerator member having a lower tank portion for containing a liquid, means for supplying combustible scum-containing material to said tank portion for flotatiori of said combustible material in a layer on said liquid, the surface of said liquid being in an agitated state, means for maintaining the agitated surface of said liquid in said lower tank portion at a predetermined level, means for discharging said fluid from said tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, burner means disposed in said ignition chamber for burning said combustible material, means for supplying combustion air to said ignition chamber to support said combustion, an upper independent combustion chamber of substantially the same diameter as the diameter of said medial ignition chamber, a conduit interconnecting said ignition chamber and said upper combustion chamber, said conduit having a substantially smaller cross-sectional area than said chambers, baffle means centrally disposed in the bottom of said upper combustion chamber for changing the direction of the products of combustion entering the combustion chamber, means for supplying combustion air to said combustion chamber adjacent said baffle means, means for discharging the products of combustion from said combustion chamber, a gas scrubber having a lower outlet for discharging particulate matter and an upper exhaust stack for discharging exhaust gases, means for transferring said products of combustion discharged from said combustion chamber to said gas scrubber, said last named means including means for cooling and increasing the velocity of said products of combustion.

3. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow Communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous flotatable materials contained in a liquid, said tank portion having an outlet, means for controlling the liquid level in said tank, ignition burners mountedon the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, means for supplying air to said combustion chamber to support combustion therein, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases; said system further comprising a baffle mounted on the bottom of said combustion chamber to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular open-topped passage with a shallow 'dish-shaped lower wall in the bottom of said combustion chamber, and wherein said means for supplyingair to said combustion chamber to support combustion therein includes combustion air jets mounted around the periphery of the combustion chamber to direct air into said annular passage.

4. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank portion having an oulet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage, interconnecting said ignition chamber with said combustion chamber, means for supplying air to said combustion chamber to support combustion therein, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases;

said ignition chamber having a shallow dome-shaped upper wall, a connecting passage interconnecting said ignition chamber and said combustion chamber having a substantially reduced diameter with respect to thediameter of said ignition chamber and said combustion chamber, a baffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an open-"topped annular passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, combustion air jets mounted around the periphery of said combustion chamber to direct air into said annular passage.

5. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank portion having an outlet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, means for supplying air to said combus' tion chamber to support combustion therein, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases;

said ignition chamber having a shallow dome-shaped upper wall, a connecting passage interconnecting said ignition chamber with said combustion chamber having a substantially reduced diameter with respect to the diameter of said ignition chamber and said combustion chamber, a baffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, combustion air jets mounted around the periphery of said combustion chamber to direct air into said annular passage, an annular header for supplying air to said combustion air jets, said annular header having an inlet connected to a distributing valve, means for adjusting said distributing valve to maintain a volume of air flow through said combustion jets to maintain said combustion chamber at a temperature of the order of from about 1200 to about l600F.

6. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow cornmmunication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank portion having an outlet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, means for supplying air to said combustion chamber to support combustion therein, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases;

said combustion chamber having an outlet of reduced diameter with respect to the diameter of the combustion chamber for discharging the products of combustion, a discharge adaptor mounted on the outlet of said combustion chamber, an elbow connected to said discharge adaptor, a butterfly valve mounted within said elbow, a quencher connected to said elbow for cooling and increasing the velocity of the moving gases, a transfer conduit connected to said quencher, a fan connected to said transfer conduit, a gas scrubber, an entrance duct interconnecting said fan and said gas scrubber.

7. In an incinerator system having a lower tank, a medial ignition chamber mounted in fluid flow communication with said tank, an upper combustion chamber, a passage of reduced diameter interconnecting said ignition chamber with said combustion chamber, a baffle mounted in the bottom portion of said combustion chamber, a method of burning scum comprising the steps of supplying liquid containing combustible material to said lower tank, maintaining a preselected level of fluid in said tank, allowing said scum to rise to the surface of said liquid, agitating the scum on the surface of said liquid, introducing air at a plurality of locations to said ignition chamber disposed adjacent said tank in fluid flow communication therewith, igniting said combustible material, directing the products of combustion from said ignition chamber through said passage of reduced diameter and thence against the baffle mounted in the bottom of the combustion chamber to direct the products of combustion radially outwardly in the bottom of said combustion chamber, introducing air for combustion to said combustion chamber adjacent said baffle, and withdrawing the products of combustion from said combustion chamber.

8. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank having an oulet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, abaffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular passage in the bottom of said combustion'chamber, combustion air jets mounted around the periphery of said combustion chamber to direct air into said annular passage.

9. An incinerator system according to claim 8, wherein said combustion air jets are mounted at an angle with respect to the radius of said combustion chamber, and further including an annular header for supplying air to said combustion air jets, said annular header having an inlet connected, and means for supplying air to 'said inlet.

10. An incinerator system according to claim 8, further comprising an annular header for supplying air to said combustion air jets, said annular header having an inlet, a distributing valve connected to said inlet, means for adjusting said distributing valve to maintain a volume of air flow through said combustion air jets to maintain said combustion chamber at a temperature of the order of from about l200 to about 1600F.

11. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chambensaid lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials maintained in a liquid, said tank portion having an oulet, means for controlling the liquid level in said tank portion, means for agitating the material on the surface of said liquid, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, a baffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular open-topped passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, combustion air jets mounted around the periphery of said combustion chamber to direct air into said annular passage, means for supplying air to said annular passage, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate matter and an upper exhaust stack for discharging exhaust gases.

12. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with saidtank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank portion having an outlet, a substantially vertically disposed conduit connected to said outlet, a drain pipe connected to said conduit, valve means mounted in said conduit to control the flow of liquid to said drain pipe, thereby controlling the liquid level in said conduit and said tank, a transverse shaft mounted in said tank adjacent the surface of said liquid, fingers mounted on said shaft, means for rotating said shaft and fingers for agitating the material on the surface of said liquid, ignition burners mounted on the wall of said ignition chamber and angularly directed at an agle of about 45 toward the liquid surface, a plurality of air jets mounted around the periphery of said ignition chamber adjacent said liquid surface, an annular header for supplying air to said jets, said annular header having an inlet connected to a distributing valve, a combustion air fan for feeding air to said distributing valve, secondary air jets mounted around the periphery of the ignition chamber towards the upper end thereof, a second annular header for feeding said secondary air jets, said secondary annular header having an inlet connected to said distributing valve, the pressure of said secondary air being substantially lower than that of said primary air,

said ignition chamber having a shallow dome-shaped upper wall, a connecting passage interconnecting said ignition chamber with said combustion chamber having a substantially reduced diameter with respect to the diameter of said ignition chamber and said combustion chamber, a baffle mounted on the bottom of said combustion chamberencompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular open-topped passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, combustion air jets mounted around the periphery of the combustion chamber to direct air into said annular passage at an angle with respect to the radius, an annular header for supplying air to said combustion air jets, said annular header having an inlet connected to said distributing valve, means for adjusting said distributing valve to maintain a volume of air flow through said combustion jets to maintain said combustion chamber at a temperature of the order of from about 1200 to about 1600 F, said combustion chamber having a shallow domeshaped upper wall, said combustion chamber having an outlet of reduced diameter with respect to the diameter of the combustion chamber for discharging the products of combustion, a discharge adaptor mounted on the outlet of said combustion chamber, a elbow connected to said discharge adaptor, a butterfly valve mounted in said 90 elbow, a quencher connected to said elbow for cooling and increasing the velocity of the moving gases, a transfer conduit connected to said quencher, a fan connected to said transfer conduit, a cylindrical gas scrubber, an entrance duct interconnecting said fan and said cylindrical gas scrubber, said gas scrubber having a lower outlet for discharging particulate matter and an upper exhaust stack for discharging exhaust gases. 

1. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber, a conduit interconnecting said ignition chamber and said upper combustion chamber, said conduit having a substantially smaller cross-sectional area than said chambers, said upper combustion chamber having substantially the same diameter as said medial ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, means for raising the floatable material to the surface of the liquid, means for agitating the surface of the liquid, said tank portion having an oulet, means for maintaining the agitated surface of the liquid at a predetermined level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, means for changing the direction of flow of the products of combustion upon entering the upper combustion chamber, means for supplying air to said combustion chamber adjacent said means for changing the direction of flow to support combustion therein, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said means for connecting said combustion chamber outlet to said gas scrubber including means for increasing the flow velocity of said products of combustion, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases.
 2. An incinerator system comprising, in combination, an incinerator member having a lower tank portion for containing a liquid, means for supplying combustible scum-containing maTerial to said tank portion for flotation of said combustible material in a layer on said liquid, the surface of said liquid being in an agitated state, means for maintaining the agitated surface of said liquid in said lower tank portion at a predetermined level, means for discharging said fluid from said tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, burner means disposed in said ignition chamber for burning said combustible material, means for supplying combustion air to said ignition chamber to support said combustion, an upper independent combustion chamber of substantially the same diameter as the diameter of said medial ignition chamber, a conduit interconnecting said ignition chamber and said upper combustion chamber, said conduit having a substantially smaller cross-sectional area than said chambers, baffle means centrally disposed in the bottom of said upper combustion chamber for changing the direction of the products of combustion entering the combustion chamber, means for supplying combustion air to said combustion chamber adjacent said baffle means, means for discharging the products of combustion from said combustion chamber, a gas scrubber having a lower outlet for discharging particulate matter and an upper exhaust stack for discharging exhaust gases, means for transferring said products of combustion discharged from said combustion chamber to said gas scrubber, said last named means including means for cooling and increasing the velocity of said products of combustion.
 3. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous flotatable materials contained in a liquid, said tank portion having an outlet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, means for supplying air to said combustion chamber to support combustion therein, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases; said system further comprising a baffle mounted on the bottom of said combustion chamber to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular open-topped passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, and wherein said means for supplying air to said combustion chamber to support combustion therein includes combustion air jets mounted around the periphery of the combustion chamber to direct air into said annular passage.
 4. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank portion having an oulet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage, interconnecting said ignition chamber with said combustion chamber, means for supplying air to said combustion chamber to support combustion therein, said combustion chamber hAving an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases; said ignition chamber having a shallow dome-shaped upper wall, a connecting passage interconnecting said ignition chamber and said combustion chamber having a substantially reduced diameter with respect to the diameter of said ignition chamber and said combustion chamber, a baffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an open-topped annular passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, combustion air jets mounted around the periphery of said combustion chamber to direct air into said annular passage.
 5. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank portion having an outlet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, means for supplying air to said combustion chamber to support combustion therein, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases; said ignition chamber having a shallow dome-shaped upper wall, a connecting passage interconnecting said ignition chamber with said combustion chamber having a substantially reduced diameter with respect to the diameter of said ignition chamber and said combustion chamber, a baffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, combustion air jets mounted around the periphery of said combustion chamber to direct air into said annular passage, an annular header for supplying air to said combustion air jets, said annular header having an inlet connected to a distributing valve, means for adjusting said distributing valve to maintain a volume of air flow through said combustion jets to maintain said combustion chamber at a temperature of the order of from about 1200* to about 1600*F.
 6. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow commmunication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank portion having an outlet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, means for supplying air to said combustion chamber to support combustion therein, said comBustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate material and an upper exhaust stack for discharging exhaust gases; said combustion chamber having an outlet of reduced diameter with respect to the diameter of the combustion chamber for discharging the products of combustion, a discharge adaptor mounted on the outlet of said combustion chamber, an elbow connected to said discharge adaptor, a butterfly valve mounted within said elbow, a quencher connected to said elbow for cooling and increasing the velocity of the moving gases, a transfer conduit connected to said quencher, a fan connected to said transfer conduit, a gas scrubber, an entrance duct interconnecting said fan and said gas scrubber.
 7. In an incinerator system having a lower tank, a medial ignition chamber mounted in fluid flow communication with said tank, an upper combustion chamber, a passage of reduced diameter interconnecting said ignition chamber with said combustion chamber, a baffle mounted in the bottom portion of said combustion chamber, a method of burning scum comprising the steps of supplying liquid containing combustible material to said lower tank, maintaining a preselected level of fluid in said tank, allowing said scum to rise to the surface of said liquid, agitating the scum on the surface of said liquid, introducing air at a plurality of locations to said ignition chamber disposed adjacent said tank in fluid flow communication therewith, igniting said combustible material, directing the products of combustion from said ignition chamber through said passage of reduced diameter and thence against the baffle mounted in the bottom of the combustion chamber to direct the products of combustion radially outwardly in the bottom of said combustion chamber, introducing air for combustion to said combustion chamber adjacent said baffle, and withdrawing the products of combustion from said combustion chamber.
 8. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank having an oulet, means for controlling the liquid level in said tank, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said igntion ignition a connecting passage interconnecting said ignition chamber with said combustion chamber, a baffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular passage in the bottom of said combustion chamber, combustion air jets mounted around the periphery of said combustion chamber to direct air into said annular passage.
 9. An incinerator system according to claim 8, wherein said combustion air jets are mounted at an angle with respect to the radius of said combustion chamber, and further including an annular header for supplying air to said combustion air jets, said annular header having an inlet connected, and means for supplying air to said inlet.
 10. An incinerator system according to claim 8, further comprising an annular header for supplying air to said combustion air jets, said annular header having an inlet, a distributing valve connected to said inlet, means for adjusting said distributing valve to maintain a volume of air flow through said combustion air jets to maintain said combustion chamber at a temperature of the order of from about 1200* to about 1600*F.
 11. An iNcinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials maintained in a liquid, said tank portion having an oulet, means for controlling the liquid level in said tank portion, means for agitating the material on the surface of said liquid, ignition burners mounted on the wall of said ignition chamber, means for supplying air to support combustion in said ignition chamber, a connecting passage interconnecting said ignition chamber with said combustion chamber, a baffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular open-topped passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, combustion air jets mounted around the periphery of said combustion chamber to direct air into said annular passage, means for supplying air to said annular passage, said combustion chamber having an outlet for discharging the products of combustion, a gas scrubber, means for connecting said combustion chamber outlet to said gas scrubber in fluid flow communication, said gas scrubber having a lower outlet for discharging particulate matter and an upper exhaust stack for discharging exhaust gases.
 12. An incinerator system comprising an incinerator member having a lower tank portion, a medial ignition chamber mounted in fluid flow communication with said tank portion, and an upper combustion chamber mounted in fluid flow communication with said ignition chamber, said lower tank having an inlet for receiving a continuous flow of oleaginous floatable materials contained in a liquid, said tank portion having an outlet, a substantially vertically disposed conduit connected to said outlet, a drain pipe connected to said conduit, valve means mounted in said conduit to control the flow of liquid to said drain pipe, thereby controlling the liquid level in said conduit and said tank, a transverse shaft mounted in said tank adjacent the surface of said liquid, fingers mounted on said shaft, means for rotating said shaft and fingers for agitating the material on the surface of said liquid, ignition burners mounted on the wall of said ignition chamber and angularly directed at an agle of about 45* toward the liquid surface, a plurality of air jets mounted around the periphery of said ignition chamber adjacent said liquid surface, an annular header for supplying air to said jets, said annular header having an inlet connected to a distributing valve, a combustion air fan for feeding air to said distributing valve, secondary air jets mounted around the periphery of the ignition chamber towards the upper end thereof, a second annular header for feeding said secondary air jets, said secondary annular header having an inlet connected to said distributing valve, the pressure of said secondary air being substantially lower than that of said primary air, said ignition chamber having a shallow dome-shaped upper wall, a connecting passage interconnecting said ignition chamber with said combustion chamber having a substantially reduced diameter with respect to the diameter of said ignition chamber and said combustion chamber, a baffle mounted on the bottom of said combustion chamber encompassing the upper end of said connecting passage to direct the products of combustion entering the combustion chamber in a radial flow pattern, said baffle forming an annular open-topped passage with a shallow dish-shaped lower wall in the bottom of said combustion chamber, combustion air jets mounted around the periphery of the combustion chamber to direct air into said annular passage at an angle with respect to the radius, an annular header for supplying air to said combustion air jets, said annular header having an inlet connected to said distributing valve, means for adjusting said distributing valve to maintain a volume of air flow through said combustion jets to maintain said combustion chamber at a temperature of the order of from about 1200* to about 1600* F, said combustion chamber having a shallow dome-shaped upper wall, said combustion chamber having an outlet of reduced diameter with respect to the diameter of the combustion chamber for discharging the products of combustion, a discharge adaptor mounted on the outlet of said combustion chamber, a 90* elbow connected to said discharge adaptor, a butterfly valve mounted in said 90* elbow, a quencher connected to said elbow for cooling and increasing the velocity of the moving gases, a transfer conduit connected to said quencher, a fan connected to said transfer conduit, a cylindrical gas scrubber, an entrance duct interconnecting said fan and said cylindrical gas scrubber, said gas scrubber having a lower outlet for discharging particulate matter and an upper exhaust stack for discharging exhaust gases. 